From: Risto Suominen <risto.suominen@gmail.com>
To: LinuxPPC-dev@ozlabs.org
Subject: [PATCH 002/002] de2104x: support for systems lacking cache coherence
Date: Thu, 12 Feb 2009 13:22:05 +0200 [thread overview]
Message-ID: <46e1c7760902120322r11cffbdcgff330a242ca586fb@mail.gmail.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 871 bytes --]
Here is a patch that helped me to get my de2104x NIC working on my
PowerMac 5500. As an interesting side effect, it also made my mesh
module crash.
Background can be found here: http://www.spinics.net/lists/netdev/msg88488.html
Risto
Allow setting NOT_COHERENT_CACHE explicitly.
Signed-off-by: Risto Suominen <Risto.Suominen@gmail.com>
---
The testing is done on kernel version 2.6.24.
--- a/arch/powerpc/platforms/powermac/Kconfig.org 2008-01-25
00:58:37.000000000 +0200
+++ b/arch/powerpc/platforms/powermac/Kconfig 2009-02-10
17:44:24.000000000 +0200
@@ -18,4 +18,10 @@ config PPC_PMAC64
select PPC_970_NAP
default y
-
+config NOT_COHERENT_CACHE
+ bool "Incoherent cache"
+ default n
+ help
+ Setting this option may be necessary for avoiding cache-related
+ problems with some network cards on some platforms. An example is
+ 2104x and PowerMac 5500.
[-- Attachment #2: incoherent_cache.patch --]
[-- Type: text/x-diff, Size: 635 bytes --]
Allow setting NOT_COHERENT_CACHE explicitly.
Signed-off-by: Risto Suominen <Risto.Suominen@gmail.com>
---
The testing is done on kernel version 2.6.24.
--- a/arch/powerpc/platforms/powermac/Kconfig.org 2008-01-25 00:58:37.000000000 +0200
+++ b/arch/powerpc/platforms/powermac/Kconfig 2009-02-10 17:44:24.000000000 +0200
@@ -18,4 +18,10 @@ config PPC_PMAC64
select PPC_970_NAP
default y
-
+config NOT_COHERENT_CACHE
+ bool "Incoherent cache"
+ default n
+ help
+ Setting this option may be necessary for avoiding cache-related
+ problems with some network cards on some platforms. An example is
+ 2104x and PowerMac 5500.
next reply other threads:[~2009-02-12 11:22 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-12 11:22 Risto Suominen [this message]
2009-02-13 3:25 ` [PATCH 002/002] de2104x: support for systems lacking cache coherence Benjamin Herrenschmidt
2009-02-13 3:26 ` Benjamin Herrenschmidt
2009-02-13 15:58 ` Risto Suominen
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