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\ *****************************************************************************
\ * 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
\ ****************************************************************************/
\ define function pointer as forward declaration for get-interrupt-line
\ this is board wireing and southbridge dependent
\ returns the wired interrupt line for this config addr
\ ( config-addr -- irq-line )
DEFER pci-get-irq-line
\ define function pointer as forward declaration for get-interrupt-sense-type
\ this is board wireing and southbridge dependent
\ returns the wired interrupt sense type for this config addr
\ 0 - Edge rising
\ 1 - Level low
\ 2 - Level high
\ 3 - Edge falling
\ ( config-addr -- irq-sense )
DEFER pci-get-irq-sense
\ *****************************************************************************
\ Generic IRQ routines
\ *****************************************************************************
: unknown-slot ( -- 0 )
\ cr pci-vec ABORT" Unknown slot "
0
;
\ 0c s" /ht/@1/@2" PCI-X INTA & INTC Pnpirq0 -> irq12
\ 0e s" /ht/@1/@2" PCI-X INTB & INTD Pnpirq1 -> irq14
\ 10 s" /ht/@8,1" ATA
\ 0f s" /ht/@1/@1" Obsidian Pnpirq2 -> irq15
\ 10 s" /ht/@7/@2" Video / Exar Serial PirqA
\ 11 s" /ht/@2/@4" Ethernet PirqB
\ 12 s" /ht/@2/@4,1" Ethernet PirqC
\ 13 s" /ht/@7/@0" USB PirqD
\ 13 s" /ht/@7/@0,1" USB PirqD
\ 13 s" /ht/@7/@0,2" USB PirqD
\ 14 s" /ht/@3/@0" PCIe gpio28
\ 15 s" /ht/@4/@0" PCIe gpio29
\ 16 s" /ht/@5/@0" PCIe gpio30
\ 17 s" /ht/@6/@0" PCIe gpio31
\ -----------------------------------------------------------------------------
\ Get the interrupt pin for a device on ht u4
: u4-get-irq-line ( config-addr -- irq-line )
\ cr s" u4-get-irq-line " type
pci-device-vec c@ CASE
1 OF pci-device-vec-len 1 >= IF
pci-device-vec 1+ c@ CASE
1 OF f ENDOF
2 OF dup pci-interrupt@ CASE
1 OF c ENDOF
3 OF e ENDOF
2 OF c ENDOF
4 OF e ENDOF
ENDCASE
ENDOF
dup OF unknown-slot ENDOF
ENDCASE
ELSE
unknown-slot
THEN
ENDOF
2 OF pci-device-vec-len 1 >= IF
pci-device-vec 1+ c@ CASE
4 OF dup pci-addr2fn 1 >= IF 12 ELSE 11 THEN ENDOF
dup OF unknown-slot ENDOF
ENDCASE
ELSE
unknown-slot
THEN
ENDOF
3 OF 14 ENDOF
4 OF 15 ENDOF
5 OF 16 ENDOF
6 OF 17 ENDOF
7 OF pci-device-vec-len 1 >= IF
pci-device-vec 1+ c@ CASE
0 OF 13 ENDOF
2 OF 10 ENDOF
dup OF unknown-slot ENDOF
ENDCASE
ELSE
unknown-slot
THEN
ENDOF
8 OF 10 ENDOF
dup OF unknown-slot ENDOF
ENDCASE
swap drop
;
\ -----------------------------------------------------------------------------
\ Get the interrupt sense type for a device on ht u4
: u4-get-irq-sense ( config-addr -- irq-sense )
\ cr s" u4-get-irq-sense " type
u4-get-irq-line CASE
0c OF 00 ENDOF
0e OF 00 ENDOF
dup OF 01 ENDOF
ENDCASE
;
\ 10 s" /ht/@4,1" set-pci-interrupt \ ATA
\ 13 s" /ht/@3/@0" set-pci-interrupt \ USB
\ 13 s" /ht/@3/@0,1" set-pci-interrupt \ USB
\ 13 s" /ht/@3/@0,2" set-pci-interrupt \ USB
\ 1c s" /ht/@2/@1" set-pci-interrupt \ Ethernet
\ 1d s" /ht/@2/@1,1" set-pci-interrupt \ Ethernet
\ -----------------------------------------------------------------------------
\ Get the interrupt pin for a device on ht u3
: u3-get-irq-line ( config-addr -- irq-line )
\ cr s" u3-get-irq-line " type
pci-device-vec c@ CASE
2 OF pci-device-vec-len 1 >= IF
pci-device-vec 1+ c@ CASE
1 OF dup pci-addr2fn 1 >= IF 1d ELSE 1c THEN ENDOF
dup OF unknown-slot ENDOF
ENDCASE
ELSE
unknown-slot
THEN
ENDOF
3 OF 13 ENDOF
4 OF 10 ENDOF
dup OF unknown-slot ENDOF
ENDCASE
swap drop
;
\ -----------------------------------------------------------------------------
\ Get the interrupt sense type for a device on ht u3
: u3-get-irq-sense ( config-addr -- irq-sense )
\ cr s" u3-get-irq-sense " type
u3-get-irq-line CASE
dup OF 01 ENDOF
ENDCASE
;
\ -----------------------------------------------------------------------------
\ Get the interrupt pin for a device on attu
: pcie-get-irq-line ( config-addr -- irq-line )
\ cr s" pcie-get-irq-line " type
drop
3
;
\ -----------------------------------------------------------------------------
\ Get the interrupt sense type for a device on attu
: pcie-get-irq-sense ( config-addr -- irq-sense )
\ cr s" pcie-get-irq-sense " type
drop
01
;
\ -----------------------------------------------------------------------------
\ Set up the special routines for HT irq handling
: ht-irq-init ( -- )
\ cr s" ht-irq-init " type
u4? IF
['] u4-get-irq-line TO pci-get-irq-line
['] u4-get-irq-sense TO pci-get-irq-sense
ELSE
['] u3-get-irq-line TO pci-get-irq-line
['] u3-get-irq-sense TO pci-get-irq-sense
THEN
;
\ -----------------------------------------------------------------------------
\ Set up the special routines for PCI-e irq handling
: pcie-irq-init ( -- )
\ cr s" pcie-irq-init " type
['] pcie-get-irq-sense TO pci-get-irq-sense
['] pcie-get-irq-line TO pci-get-irq-line
;
\ -----------------------------------------------------------------------------
\ Set up the special routines for irq handling
0 VALUE mpic
: pci-irq-init ( mpic puid -- mpic )
over TO mpic
18 rshift FF and
CASE
F1 OF pcie-irq-init ENDOF
F2 OF ht-irq-init ENDOF
dup OF ABORT" Wrong PUID! in pci-irq-init" ENDOF
ENDCASE
;
\ -----------------------------------------------------------------------------
\ Set the interrupt pin for a device
: pci-set-irq-line ( config-addr -- )
\ cr pci-vec
dup pci-get-irq-line
\ ." ->" dup .
swap pci-irq-line!
;
\ -----------------------------------------------------------------------------
\ Add an irq entry for the device at config-addr into the irq map
\ each entry consists of 7 integer values
\ Structure of an entry:
\ +----------+---+---+------------+--------------+---------+---------------+
\ Number# | 0 | 1 | 2 | 3 | 4 | 5 | 6 |
\ +----------+---+---+------------+--------------+---------+---------------+
\ meaning | config | | | int# | phandle | intr nr | pos edge (0) |
\ | addr | | | (1=a, 2=b, | intr contr | | act ll (1) |
\ +----------+---+---+------------+--------------+---------+---------------+
\ value | pci slot | 0 | 0 | 1 | mpic | 7 | 0|1 |
\ +----------+---+---+------------+--------------+---------+---------------+
: pci-gen-irq-entry ( prop-addr prop-len config-addr -- prop-addr prop-len )
dup >r encode-int+ 0 encode-64+ \ config addr
r@ pci-interrupt@ encode-int+ \ interrupt type
mpic encode-int+ \ phandle to MPIC
r@ pci-irq-line@ encode-int+ \ interrupt number
r> pci-get-irq-sense encode-int+ \ trigger type
;
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