diff options
| author | Alexandru Gagniuc <mr.nuke.me@gmail.com> | 2012-08-23 02:32:58 -0500 |
|---|---|---|
| committer | Alexandru Gagniuc <mr.nuke.me@gmail.com> | 2012-10-04 04:27:29 +0200 |
| commit | 70c660fd1473b8c6ca7b71276b9552ee2205c99a (patch) | |
| tree | 51bb9ef72dbe12fa6701005397f2a0c2c06bd688 /src/Kconfig | |
| parent | 93a8b27cbed8a288ee6a65436ec22ad5a67fdbd0 (diff) | |
pirq_routing: Allow routing with more than 4 PIRQ links
pirq_routing_irqs assumed that only four links are available for PIRQ
routing, INTA to INTD. Some chipsets provide more, up to INTH.
When pirq_routing_irqs found a link number greater than 4 in the pirq table,
it would not assign that IRQ. This is a shame, as it limits the flexibility
of routing IRQs.
Make the maximum number of links a Kconfig variable, and modify the code to
respect it. This works beatifully on the VX900, which provides 8 routable
interrupts.
While we're at it, also refactor pirq_routing_irqs, and add some much
needed comments.
Rename pirq_routing_irqs to pirq_route_irqs to demistify the role of this
function.
The copyrights added were determined from git log filename.
Change-Id: I4b565315404c65b871406f616474e2cc9e6e013e
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/1482
Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/Kconfig')
| -rw-r--r-- | src/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/Kconfig b/src/Kconfig index 469266dde9..e0062dde6e 100644 --- a/src/Kconfig +++ b/src/Kconfig @@ -1,6 +1,7 @@ ## ## This file is part of the coreboot project. ## +## Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com> ## Copyright (C) 2009-2010 coresystems GmbH ## ## This program is free software; you can redistribute it and/or modify @@ -374,6 +375,17 @@ config HAVE_PIRQ_TABLE Whether or not the PIRQ table is actually generated by coreboot is configurable by the user via GENERATE_PIRQ_TABLE. +config MAX_PIRQ_LINKS + int + default 4 + help + This variable specifies the number of PIRQ interrupt links which are + routable. On most chipsets, this is 4, INTA through INTD. Some + chipsets offer more than four links, commonly up to INTH. They may + also have a separate link for ATA or IOAPIC interrupts. When the PIRQ + table specifies links greater than 4, pirq_route_irqs will not + function properly, unless this variable is correctly set. + #These Options are here to avoid "undefined" warnings. #The actual selection and help texts are in the following menu. |