blob: 9efa87e65acbf5fbb3c7d327e35a8a5f08a9dd07 [file] [log] [blame]
\ *****************************************************************************
\ * Copyright (c) 2004, 2008 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
\ ****************************************************************************/
#include "pci-class-code-names.fs"
\ read the various bar type sizes
: pci-bar-size@ ( bar-addr -- bar-size ) -1 over rtas-config-l! rtas-config-l@ ;
: pci-bar-size-mem@ ( bar-addr -- mem-size ) pci-bar-size@ -10 and invert 1+ FFFFFFFF and ;
: pci-bar-size-io@ ( bar-addr -- io-size ) pci-bar-size@ -4 and invert 1+ FFFFFFFF and ;
\ fetch raw bar size but keep original BAR value
: pci-bar-size ( bar-addr -- bar-size-raw )
dup rtas-config-l@ swap \ fetch original Value ( bval baddr )
-1 over rtas-config-l! \ make BAR show size ( bval baddr )
dup rtas-config-l@ \ and fetch the size ( bval baddr bsize )
-rot rtas-config-l! \ restore Value
;
\ calc 32 bit MEM BAR size
: pci-bar-size-mem32 ( bar-addr -- bar-size )
pci-bar-size \ fetch raw size
-10 and invert 1+ \ calc size
FFFFFFFF and \ keep lower 32 bits
;
\ calc 32 bit ROM BAR size
: pci-bar-size-rom ( bar-addr -- bar-size )
pci-bar-size \ fetch raw size
FFFFF800 and invert 1+ \ calc size
FFFFFFFF and \ keep lower 32 bits
;
\ calc 64 bit MEM BAR size
: pci-bar-size-mem64 ( bar-addr -- bar-size )
dup pci-bar-size \ fetch raw size lower 32 bits
swap 4 + pci-bar-size \ fetch raw size upper 32 bits
20 lshift + \ and put them together
-10 and invert 1+ \ calc size
;
\ calc IO BAR size
: pci-bar-size-io ( bar-addr -- bar-size )
pci-bar-size \ fetch raw size
-4 and invert 1+ \ calc size
FFFFFFFF and \ keep lower 32 bits
;
\ decode the Bar Type
\ +----------------------------------------------------------------------------------------+
\ | 3 2 1 0 |
\ | +----------------------------+-+--+-+ |
\ | MEM-BAR : | Base Address |P|TT|0| P - prefechtable ; TT - 00 : 32 Bit |
\ | +----------------------------+-+--+-+ 10 : 64 Bit |
\ | +-------------------------------+-+-+ |
\ | IO-BAR : | Base Address |0|1| |
\ | +-------------------------------+-+-+ |
\ | That is: 0 - no encoded BarType |
\ | 1 - IO - Bar |
\ | 2 - Memory 32 Bit |
\ | 3 - Memory 32 Bit prefetchable |
\ | 4 - Memory 64 Bit |
\ | 5 - Memory 64 Bit prefetchable |
\ +----------------------------------------------------------------------------------------+
: pci-bar-code@ ( bar-addr -- 0|1..4|5 )
rtas-config-l@ dup \ fetch the BaseAddressRegister
1 and IF \ IO BAR ?
2 and IF 0 ELSE 1 THEN \ only '01' is valid
ELSE \ Memory BAR ?
F and CASE
0 OF 2 ENDOF \ Memory 32 Bit Non-Prefetchable
8 OF 3 ENDOF \ Memory 32 Bit Prefetchable
4 OF 4 ENDOF \ Memory 64 Bit Non-Prefetchable
C OF 5 ENDOF \ Memory 64 Bit Prefechtable
dup OF 0 ENDOF \ Not a valid BarType
ENDCASE
THEN
;
\ ***************************************************************************************
\ Assigning the new Value to the BARs
\ ***************************************************************************************
\ align the current mem and set var to next mem
\ align with a size of 0 returns 0 !!!
: assign-var ( size var -- al-mem )
2dup @ \ ( size var size cur-mem ) read current free mem
swap #aligned \ ( size var al-mem ) align the mem to the size
dup 2swap -rot + \ ( al-mem var new-mem ) add size to aligned mem
swap ! \ ( al-mem ) set variable to new mem
;
\ set bar to current free mem ( in variable ) and set variable to next free mem
: assign-bar-value32 ( bar size var -- 4 )
over IF \ IF size > 0
assign-var \ | ( bar al-mem ) set variable to next mem
swap rtas-config-l! \ | ( -- ) set the bar to al-mem
ELSE \ ELSE
2drop drop \ | clear stack
THEN \ FI
4 \ size of the base-address-register
;
\ set bar to current free mem ( in variable ) and set variable to next free mem
: assign-bar-value64 ( bar size var -- 8 )
over IF \ IF size > 0
assign-var \ | ( bar al-mem ) set variable to next mem
swap \ | ( al-mem addr ) calc config-addr of this bar
2dup rtas-config-l! \ | ( al-mem addr ) set the Lower part of the bar to al-mem
4 + swap 20 rshift \ | ( al-mem>>32 addr ) prepare the upper part of the al-mem
swap rtas-config-l! \ | ( -- ) and set the upper part of the bar
ELSE \ ELSE
2drop drop \ | clear stack
THEN \ FI
8 \ size of the base-address-register
;
\ Setup a prefetchable 64bit BAR and return its size
: assign-mem64-bar ( bar-addr -- 8 )
dup pci-bar-size-mem64 \ fetch size
pci-next-mem64 @ 0 = IF \ Check if we have 64-bit memory range
pci-next-mem
ELSE
pci-next-mem64
THEN
assign-bar-value64 \ and set it all
;
\ Setup a prefetchable 32bit BAR and return its size
: assign-mem32-bar ( bar-addr -- 4 )
dup pci-bar-size-mem32 \ fetch size
pci-next-mem \ var to change
assign-bar-value32 \ and set it all
;
\ Setup a non-prefetchable 64bit BAR and return its size
: assign-mmio64-bar ( bar-addr -- 8 )
dup pci-bar-size-mem64 \ fetch size
pci-next-mem64 @ 0 = IF \ Check if we have 64-bit memory range
pci-next-mmio
ELSE
pci-next-mem64 \ for board-qemu we will use same range
THEN
assign-bar-value64 \ and set it all
;
\ Setup a non-prefetchable 32bit BAR and return its size
: assign-mmio32-bar ( bar-addr -- 4 )
dup pci-bar-size-mem32 \ fetch size
pci-next-mmio \ var to change
assign-bar-value32 \ and set it all
;
\ Setup an IO-Bar and return the size of the base-address-register
: assign-io-bar ( bar-addr -- 4 )
dup pci-bar-size-io \ fetch size
pci-next-io \ var to change
assign-bar-value32 \ and set it all
;
\ Setup an Expansion ROM bar
: assign-rom-bar ( bar-addr -- )
dup pci-bar-size-rom \ fetch size
dup IF \ IF size > 0
over >r \ | save bar addr for enable
pci-next-mmio \ | var to change
assign-bar-value32 \ | and set it
drop \ | forget the BAR length
r@ rtas-config-l@ \ | fetch BAR
1 or r> rtas-config-l! \ | and enable the ROM
ELSE \ ELSE
2drop \ | clear stack
THEN
;
\ Setup the BAR due to its type and return the size of the register (4 or 8 Bytes ) used as increment for the BAR-Loop
: assign-bar ( bar-addr -- reg-size )
dup pci-bar-code@ \ calc BAR type
dup IF \ IF >0
CASE \ | CASE Setup the right type
1 OF assign-io-bar ENDOF \ | - set up an IO-Bar
2 OF assign-mmio32-bar ENDOF \ | - set up an 32bit MMIO-Bar
3 OF assign-mem32-bar ENDOF \ | - set up an 32bit MEM-Bar (prefetchable)
4 OF assign-mmio64-bar ENDOF \ | - set up an 64bit MMIO-Bar
5 OF assign-mem64-bar ENDOF \ | - set up an 64bit MEM-Bar (prefetchable)
ENDCASE \ | ESAC
ELSE \ ELSE
ABORT \ | Throw an exception
THEN \ FI
;
\ Setup all the bars of a pci device
: assign-all-device-bars ( configaddr -- )
28 10 DO \ BARs start at 10 and end at 27
dup i + \ calc config-addr of the BAR
assign-bar \ and set it up
+LOOP \ add 4 or 8 to the index and loop
30 + assign-rom-bar \ set up the ROM if available
;
\ Setup all the bars of a pci device
: assign-all-bridge-bars ( configaddr -- )
18 10 DO \ BARs start at 10 and end at 17
dup i + \ calc config-addr of the BAR
assign-bar \ and set it up
+LOOP \ add 4 or 8 to the index and loop
38 + assign-rom-bar \ set up the ROM if available
;
\ +---------------------------------------------------------------------------------------+
\ | Numerical Representaton of a PCI address (PCI Bus Binding 2.2.1.1) |
\ | |
\ | 31 24 16 11 8 0 |
\ | +--------+--------+-----+---+--------+ |
\ | phys.hi: |npt000ss| bus | dev |fnc| reg | n - 0 relocatable |
\ | +--------+--------+-----+---+--------+ p - 1 prefetchable |
\ | t - 1 aliased or <1MB or <64KB |
\ | ss - 00 Configuration Space |
\ | 01 I/O Space |
\ | 10 Memory Space 32bits |
\ | 11 Memory Space 64bits |
\ +---------------------------------------------------------------------------------------+
\ ***************************************************************************************
\ Generating the assigned-addresses property
\ ***************************************************************************************
\ generate assigned-addresses property for 64Bit MEM-BAR and return BAR-reg-size
: gen-mem64-bar-prop ( prop-addr prop-len bar-addr -- prop-addr prop-len 8 )
dup pci-bar-size-mem64 \ fetch BAR Size ( paddr plen baddr bsize )
dup IF \ IF Size > 0
>r dup rtas-config-l@ \ | save size and fetch lower 32 bits ( paddr plen baddr val.lo R: size)
over 4 + rtas-config-l@ \ | fetch upper 32 bits ( paddr plen baddr val.lo val.hi R: size)
20 lshift + -10 and >r \ | calc 64 bit value and save it ( paddr plen baddr R: size val )
83000000 or encode-int+ \ | Encode config addr ( paddr plen R: size val )
r> encode-64+ \ | Encode assigned addr ( paddr plen R: size )
r> encode-64+ \ | Encode size ( paddr plen )
ELSE \ ELSE
2drop \ | don't do anything
THEN \ FI
8 \ sizeof(BAR) = 8 Bytes
;
\ generate assigned-addresses property for prefetchable 64Bit MEM-BAR and return BAR-reg-size
: gen-pmem64-bar-prop ( prop-addr prop-len bar-addr -- prop-addr prop-len 8 )
dup pci-bar-size-mem64 \ fetch BAR Size ( paddr plen baddr bsize )
dup IF \ IF Size > 0
>r dup rtas-config-l@ \ | save size and fetch lower 32 bits ( paddr plen baddr val.lo R: size)
over 4 + rtas-config-l@ \ | fetch upper 32 bits ( paddr plen baddr val.lo val.hi R: size)
20 lshift + -10 and >r \ | calc 64 bit value and save it ( paddr plen baddr R: size val )
C3000000 or encode-int+ \ | Encode config addr ( paddr plen R: size val )
r> encode-64+ \ | Encode assigned addr ( paddr plen R: size )
r> encode-64+ \ | Encode size ( paddr plen )
ELSE \ ELSE
2drop \ | don't do anything
THEN \ FI
8 \ sizeof(BAR) = 8 Bytes
;
\ generate assigned-addresses property for 32Bit MEM-BAR and return BAR-reg-size
: gen-mem32-bar-prop ( prop-addr prop-len bar-addr -- prop-addr prop-len 4 )
dup pci-bar-size-mem32 \ fetch BAR Size ( paddr plen baddr bsize )
dup IF \ IF Size > 0
>r dup rtas-config-l@ \ | save size and fetch value ( paddr plen baddr val R: size)
-10 and >r \ | calc 32 bit value and save it ( paddr plen baddr R: size val )
82000000 or encode-int+ \ | Encode config addr ( paddr plen R: size val )
r> encode-64+ \ | Encode assigned addr ( paddr plen R: size )
r> encode-64+ \ | Encode size ( paddr plen )
ELSE \ ELSE
2drop \ | don't do anything
THEN \ FI
4 \ sizeof(BAR) = 4 Bytes
;
\ generate assigned-addresses property for prefetchable 32Bit MEM-BAR and return BAR-reg-size
: gen-pmem32-bar-prop ( prop-addr prop-len bar-addr -- prop-addr prop-len 4 )
dup pci-bar-size-mem32 \ fetch BAR Size ( paddr plen baddr bsize )
dup IF \ IF Size > 0
>r dup rtas-config-l@ \ | save size and fetch value ( paddr plen baddr val R: size)
-10 and >r \ | calc 32 bit value and save it ( paddr plen baddr R: size val )
C2000000 or encode-int+ \ | Encode config addr ( paddr plen R: size val )
r> encode-64+ \ | Encode assigned addr ( paddr plen R: size )
r> encode-64+ \ | Encode size ( paddr plen )
ELSE \ ELSE
2drop \ | don't do anything
THEN \ FI
4 \ sizeof(BAR) = 4 Bytes
;
\ generate assigned-addresses property for IO-BAR and return BAR-reg-size
: gen-io-bar-prop ( prop-addr prop-len bar-addr -- prop-addr prop-len 4 )
dup pci-bar-size-io \ fetch BAR Size ( paddr plen baddr bsize )
dup IF \ IF Size > 0
>r dup rtas-config-l@ \ | save size and fetch value ( paddr plen baddr val R: size)
-4 and >r \ | calc 32 bit value and save it ( paddr plen baddr R: size val )
81000000 or encode-int+ \ | Encode config addr ( paddr plen R: size val )
r> encode-64+ \ | Encode assigned addr ( paddr plen R: size )
r> encode-64+ \ | Encode size ( paddr plen )
ELSE \ ELSE
2drop \ | don't do anything
THEN \ FI
4 \ sizeof(BAR) = 4 Bytes
;
\ generate assigned-addresses property for ROM-BAR
: gen-rom-bar-prop ( prop-addr prop-len bar-addr -- prop-addr prop-len )
dup pci-bar-size-rom \ fetch BAR Size ( paddr plen baddr bsize )
dup IF \ IF Size > 0
>r dup rtas-config-l@ \ | save size and fetch value ( paddr plen baddr val R: size)
FFFFF800 and >r \ | calc 32 bit value and save it ( paddr plen baddr R: size val )
82000000 or encode-int+ \ | Encode config addr ( paddr plen R: size val )
r> encode-64+ \ | Encode assigned addr ( paddr plen R: size )
r> encode-64+ \ | Encode size ( paddr plen )
ELSE \ ELSE
2drop \ | don't do anything
THEN \ FI
;
\ add another BAR to the assigned addresses property and return the size of the encoded register
: pci-add-assigned-address ( prop-addr prop-len bar-addr -- prop-addr prop-len bsize )
dup pci-bar-code@ \ calc BAR type ( paddr plen baddr btype)
CASE \ CASE for the BAR types ( paddr plen baddr )
0 OF drop 4 ENDOF \ - not a valid type so do nothing
1 OF gen-io-bar-prop ENDOF \ - IO-BAR
2 OF gen-mem32-bar-prop ENDOF \ - MEM32
3 OF gen-pmem32-bar-prop ENDOF \ - MEM32 prefetchable
4 OF gen-mem64-bar-prop ENDOF \ - MEM64
5 OF gen-pmem64-bar-prop ENDOF \ - MEM64 prefetchable
ENDCASE \ ESAC ( paddr plen bsize )
;
\ generate the assigned address property for a PCI device
: pci-device-assigned-addresses-prop ( addr -- )
encode-start \ provide mem for property ( addr paddr plen )
2 pick 30 + gen-rom-bar-prop \ assign the rom bar
28 10 DO \ we have 6 possible BARs
2 pick i + \ calc BAR address ( addr paddr plen bar-addr )
pci-add-assigned-address \ and generate the props for the BAR
+LOOP \ increase Index by returned len
s" assigned-addresses" property drop \ and write it into the device tree
;
\ generate the assigned address property for a PCI bridge
: pci-bridge-assigned-addresses-prop ( addr -- )
encode-start \ provide mem for property
2 pick 38 + gen-rom-bar-prop \ assign the rom bar
18 10 DO \ we have 2 possible BARs
2 pick i + \ ( addr paddr plen current-addr )
pci-add-assigned-address \ and generate the props for the BAR
+LOOP \ increase Index by returned len
s" assigned-addresses" property drop \ and write it into the device tree
;
\ check if the range is valid and if so encode it into
\ child.hi child.mid child.lo parent.hi parent.mid parent.lo size.hi size.lo
\ This is needed to translate the childrens addresses
\ We implement only 1:1 mapping for all PCI bridges
: pci-bridge-gen-range ( paddr plen base limit type -- paddr plen )
>r over - \ calc size ( paddr plen base size R:type )
dup 0< IF \ IF Size < 0 ( paddr plen base size R:type )
2drop r> drop \ | forget values ( paddr plen )
ELSE \ ELSE
1+ swap 2swap \ | adjust stack ( size base paddr plen R:type )
r@ encode-int+ \ | Child type ( size base paddr plen R:type )
2 pick encode-64+ \ | Child address ( size base paddr plen R:type )
r> encode-int+ \ | Parent type ( size base paddr plen )
rot encode-64+ \ | Parent address ( size paddr plen )
rot encode-64+ \ | Encode size ( paddr plen )
THEN \ FI
;
\ generate an mmio space to the ranges property
: pci-bridge-gen-mmio-range ( addr prop-addr prop-len -- addr prop-addr prop-len )
2 pick 20 + rtas-config-l@ \ fetch Value ( addr paddr plen val )
dup 0000FFF0 and 10 lshift \ calc base-address ( addr paddr plen val base )
swap 000FFFFF or \ calc limit-address ( addr paddr plen base limit )
02000000 pci-bridge-gen-range \ and generate it ( addr paddr plen )
;
\ generate an mem space to the ranges property
: pci-bridge-gen-mem-range ( addr prop-addr prop-len -- addr prop-addr prop-len )
2 pick 24 + rtas-config-l@ \ fetch Value ( addr paddr plen val )
dup 000FFFFF or \ calc limit Bits 31:0 ( addr paddr plen val limit.31:0 )
swap 0000FFF0 and 10 lshift \ calc base Bits 31:0 ( addr paddr plen limit.31:0 base.31:0 )
4 pick 28 + rtas-config-l@ \ fetch upper Basebits ( addr paddr plen limit.31:0 base.31:0 base.63:32 )
20 lshift or swap \ and calc Base ( addr paddr plen base.63:0 limit.31:0 )
4 pick 2C + rtas-config-l@ \ fetch upper Limitbits ( addr paddr plen base.63:0 limit.31:0 limit.63:32 )
20 lshift or \ and calc Limit ( addr paddr plen base.63:0 limit.63:0 )
42000000 pci-bridge-gen-range \ and generate it ( addr paddr plen )
;
\ generate an io space to the ranges property
: pci-bridge-gen-io-range ( addr prop-addr prop-len -- addr prop-addr prop-len )
2 pick 1C + rtas-config-l@ \ fetch Value ( addr paddr plen val )
dup 0000F000 and 00000FFF or \ calc Limit Bits 15:0 ( addr paddr plen val limit.15:0 )
swap 000000F0 and 8 lshift \ calc Base Bits 15:0 ( addr paddr plen limit.15:0 base.15:0 )
4 pick 30 + rtas-config-l@ \ fetch upper Bits ( addr paddr plen limit.15:0 base.15:0 val )
dup FFFF and 10 lshift rot or \ calc Base ( addr paddr plen limit.15:0 val base.31:0 )
-rot FFFF0000 and or \ calc Limit ( addr paddr plen base.31:0 limit.31:0 )
01000000 pci-bridge-gen-range \ and generate it ( addr paddr plen )
;
\ generate the ranges property for a PCI bridge
: pci-bridge-range-props ( addr -- )
encode-start \ provide mem for property
pci-bridge-gen-mmio-range \ generate the non prefetchable Memory Entry
pci-bridge-gen-mem-range \ generate the prefetchable Memory Entry
pci-bridge-gen-io-range \ generate the IO Entry
dup IF \ IF any space present (propsize>0)
s" ranges" property \ | write it into the device tree
ELSE \ ELSE
s" " s" ranges" property
2drop \ | forget the properties
THEN \ FI
drop \ forget the address
;
\ create the interrupt map for this bridge
: pci-bridge-interrupt-map ( -- )
encode-start \ create the property ( paddr plen )
get-node child \ find the first child ( paddr plen handle )
BEGIN dup WHILE \ Loop as long as the handle is non-zero ( paddr plen handle )
dup >r >space \ Get the my-space ( paddr plen addr R: handle )
pci-gen-irq-entry \ and Encode the interrupt settings ( paddr plen R: handle)
r> peer \ Get neighbour ( paddr plen handle )
REPEAT \ process next childe node ( paddr plen handle )
drop \ forget the null ( paddr plen )
s" interrupt-map" property \ and set it ( -- )
1 encode-int s" #interrupt-cells" property \ encode the cell#
f800 encode-int 0 encode-int+ 0 encode-int+ \ encode the bit mask for config addr (Dev only)
7 encode-int+ s" interrupt-map-mask" property \ encode IRQ#=7 and generate property
;
\ ***************************************************************************************
\ Generating the reg property
\ ***************************************************************************************
\ reg = config-addr 0 0 0 0 [BAR-config-addr 0 0 size.high size.low]
\ encode the reg prop for a nonprefetchable 32bit MEM-BAR
: encode-mem32-bar ( prop-addr prop-len BAR-addr -- prop-addr prop-len 4 )
dup pci-bar-size-mem32 \ calc BAR-size ( not changing the BAR )
dup IF \ IF BAR-size > 0 ( paddr plen baddr bsize )
>r 02000000 or encode-int+ \ | save size and encode BAR addr
0 encode-64+ \ | make mid and lo zero
r> encode-64+ \ | encode size
ELSE \ ELSE
2drop \ | don't do anything
THEN \ FI
4 \ BAR-Len = 4 (32Bit)
;
\ encode the reg prop for a prefetchable 32bit MEM-BAR
: encode-pmem32-bar ( prop-addr prop-len BAR-addr -- prop-addr prop-len 4 )
dup pci-bar-size-mem32 \ calc BAR-size ( not changing the BAR )
dup IF \ IF BAR-size > 0 ( paddr plen baddr bsize )
>r 42000000 or encode-int+ \ | save size and encode BAR addr
0 encode-64+ \ | make mid and lo zero
r> encode-64+ \ | encode size
ELSE \ ELSE
2drop \ | don't do anything
THEN \ FI
4 \ BAR-Len = 4 (32Bit)
;
\ encode the reg prop for a nonprefetchable 64bit MEM-BAR
: encode-mem64-bar ( prop-addr prop-len BAR-addr -- prop-addr prop-len 8 )
dup pci-bar-size-mem64 \ calc BAR-size ( not changing the BAR )
dup IF \ IF BAR-size > 0 ( paddr plen baddr bsize )
>r 03000000 or encode-int+ \ | save size and encode BAR addr
0 encode-64+ \ | make mid and lo zero
r> encode-64+ \ | encode size
ELSE \ ELSE
2drop \ | don't do anything
THEN \ FI
8 \ BAR-Len = 8 (64Bit)
;
\ encode the reg prop for a prefetchable 64bit MEM-BAR
: encode-pmem64-bar ( prop-addr prop-len BAR-addr -- prop-addr prop-len 8 )
dup pci-bar-size-mem64 \ calc BAR-size ( not changing the BAR )
dup IF \ IF BAR-size > 0 ( paddr plen baddr bsize )
>r 43000000 or encode-int+ \ | save size and encode BAR addr
0 encode-64+ \ | make mid and lo zero
r> encode-64+ \ | encode size
ELSE \ ELSE
2drop \ | don't do anything
THEN \ FI
8 \ BAR-Len = 8 (64Bit)
;
\ encode the reg prop for a ROM-BAR
: encode-rom-bar ( prop-addr prop-len configaddr -- prop-addr prop-len )
dup pci-bar-size-rom \ fetch raw BAR-size
dup IF \ IF BAR is used
>r 02000000 or encode-int+ \ | save size and encode BAR addr
0 encode-64+ \ | make mid and lo zero
r> encode-64+ \ | calc and encode the size
ELSE \ ELSE
2drop \ | don't do anything
THEN \ FI
;
\ encode the reg prop for an IO-BAR
: encode-io-bar ( prop-addr prop-len BAR-addr BAR-value -- prop-addr prop-len 4 )
dup pci-bar-size-io \ calc BAR-size ( not changing the BAR )
dup IF \ IF BAR-size > 0 ( paddr plen baddr bsize )
>r 01000000 or encode-int+ \ | save size and encode BAR addr
0 encode-64+ \ | make mid and lo zero
r> encode-64+ \ | encode size
ELSE \ ELSE
2drop \ | don't do anything
THEN \ FI
4 \ BAR-Len = 4 (32Bit)
;
\ write the representation of this BAR into the reg property
: encode-bar ( prop-addr prop-len bar-addr -- prop-addr prop-len bar-len )
dup pci-bar-code@ \ calc BAR type
CASE \ CASE for the BAR types ( paddr plen baddr val )
0 OF drop 4 ENDOF \ - not a valid type so do nothing
1 OF encode-io-bar ENDOF \ - IO-BAR
2 OF encode-mem32-bar ENDOF \ - MEM32
3 OF encode-pmem32-bar ENDOF \ - MEM32 prefetchable
4 OF encode-mem64-bar ENDOF \ - MEM64
5 OF encode-pmem64-bar ENDOF \ - MEM64 prefetchable
ENDCASE \ ESAC ( paddr plen blen )
;
\ Setup reg property
\ first encode the configuration space address
: pci-reg-props ( configaddr -- )
dup encode-int \ configuration space ( caddr paddr plen )
0 encode-64+ \ make the rest 0
0 encode-64+ \ encode the size as 0
2 pick pci-htype@ \ fetch Header Type ( caddr paddr plen type )
1 and IF \ IF Bridge ( caddr paddr plen )
18 10 DO \ | loop over all BARs
2 pick i + \ | calc bar-addr ( caddr paddr plen baddr )
encode-bar \ | encode this BAR ( caddr paddr plen blen )
+LOOP \ | increase LoopIndex by the BARlen
2 pick 38 + \ | calc ROM-BAR for a bridge ( caddr paddr plen baddr )
encode-rom-bar \ | encode the ROM-BAR ( caddr paddr plen )
ELSE \ ELSE ordinary device ( caddr paddr plen )
28 10 DO \ | loop over all BARs
2 pick i + \ | calc bar-addr ( caddr paddr plen baddr )
encode-bar \ | encode this BAR ( caddr paddr plen blen )
+LOOP \ | increase LoopIndex by the BARlen
2 pick 30 + \ | calc ROM-BAR for a device ( caddr paddr plen baddr )
encode-rom-bar \ | encode the ROM-BAR ( caddr paddr plen )
THEN \ FI ( caddr paddr plen )
s" reg" property \ and store it into the property
drop
;
\ ***************************************************************************************
\ Generating common properties
\ ***************************************************************************************
\ set up common properties for devices and bridges
: pci-common-props ( addr -- )
dup pci-class-name device-name
dup pci-vendor@ encode-int s" vendor-id" property
dup pci-device@ encode-int s" device-id" property
dup pci-revision@ encode-int s" revision-id" property
dup pci-class@ encode-int s" class-code" property
3 encode-int s" #address-cells" property
2 encode-int s" #size-cells" property
dup pci-config-ext? IF 1 encode-int s" ibm,pci-config-space-type" property THEN
dup pci-status@
dup 9 rshift 3 and encode-int s" devsel-speed" property
dup 7 rshift 1 and IF 0 0 s" fast-back-to-back" property THEN
dup 6 rshift 1 and IF 0 0 s" 66mhz-capable" property THEN
5 rshift 1 and IF 0 0 s" udf-supported" property THEN
dup pci-cache@ ?dup IF encode-int s" cache-line-size" property THEN
pci-interrupt@ ?dup IF encode-int s" interrupts" property THEN
;
\ set up device only properties
: pci-device-props ( addr -- )
\ FIXME no s" compatible" prop
\ FIXME no s" alternate-reg" prop
\ FIXME no s" fcode-rom-offset" prop
\ FIXME no s" power-consumption" prop
dup pci-common-props
dup pci-min-grant@ encode-int s" min-grant" property
dup pci-max-lat@ encode-int s" max-latency" property
dup pci-sub-device@ ?dup IF encode-int s" subsystem-id" property THEN
dup pci-sub-vendor@ ?dup IF encode-int s" subsystem-vendor-id" property THEN
dup pci-device-assigned-addresses-prop
pci-reg-props
pci-hotplug-enabled IF
\ QEMU uses static assignments for my-drc-index:
\ 40000000h + $bus << 8 + $slot << 3
dup dup pci-addr2bus 8 lshift
swap pci-addr2dev 3 lshift or
40000000 + encode-int s" ibm,my-drc-index" property
\ QEMU uses "Slot $bus*32$slotno" for loc-code
dup dup pci-addr2bus 20 *
swap pci-addr2dev +
a base !
s" Slot " rot $cathex
hex
encode-string s" ibm,loc-code" property
THEN
;
\ set up bridge only properties
: pci-bridge-props ( addr -- )
\ FIXME no s" slot-names" prop
\ FIXME no s" bus-master-capable" prop
\ FIXME no s" clock-frequency" prop
dup pci-bus@
encode-int s" primary-bus" property
encode-int s" secondary-bus" property
encode-int s" subordinate-bus" property
dup pci-bus@ drop encode-int rot encode-int+ s" bus-range" property
pci-device-slots encode-int s" slot-names" property
dup pci-bridge-range-props
dup pci-bridge-assigned-addresses-prop
\ Only create interrupt-map when it doesn't already exist
\ (it can be provided by qemu)
s" interrupt-map" get-node get-property IF
pci-bridge-interrupt-map
ELSE 2drop THEN
pci-reg-props
;
\ used to set up all unknown Bridges.
\ If a Bridge has no special handling for setup
\ the device file (pci-bridge_VENDOR_DEVICE.fs) can call
\ this word to setup busses and scan beyond.
: pci-bridge-generic-setup ( addr -- )
pci-device-slots >r \ save the slot array on return stack
dup pci-common-props \ set the common properties before scanning the bus
s" pci" device-type \ the type is allways "pci"
dup pci-bridge-probe \ find all device connected to it
dup assign-all-bridge-bars \ set up all memory access BARs
dup pci-set-irq-line \ set the interrupt pin
dup pci-set-capabilities \ set up the capabilities
pci-bridge-props \ and generate all properties
r> TO pci-device-slots \ and reset the slot array
;
\ used for an gerneric device set up
\ if a device has no special handling for setup
\ the device file (pci-device_VENDOR_DEVICE.fs) can call
\ this word to setup the device
: pci-device-generic-setup ( config-addr -- )
dup assign-all-device-bars \ calc all BARs
dup pci-set-irq-line \ set the interrupt pin
dup pci-set-capabilities \ set up the capabilities
dup pci-device-props \ and generate all properties
drop \ forget the config-addr
;