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| author | Risto Suominen <risto.suominen@gmail.com> | 2009-06-10 13:55:00 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-06-11 13:32:41 +0400 |
| commit | b77e5228849fdcd7a5d73beb16b9ad99395236ec (patch) | |
| tree | 3a5bc41d328882fab6fd6e2f48fd72f6bda3b308 /drivers/net/tulip/Kconfig | |
| parent | ef5c89967d50042b29937fb724e057c1aa3c5207 (diff) | |
| download | linux-b77e5228849fdcd7a5d73beb16b9ad99395236ec.tar.xz | |
de2104x: support for systems lacking cache coherence
Add a configurable Descriptor Skip Length for systems that lack cache
coherence.
(akpm: I think this should be done as a module parameter, not a
compile-tinme option)
Signed-off-by: Risto Suominen <Risto.Suominen@gmail.com>
Cc: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/tulip/Kconfig')
| -rw-r--r-- | drivers/net/tulip/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/tulip/Kconfig b/drivers/net/tulip/Kconfig index d913405bc393..1cc8cf4425d1 100644 --- a/drivers/net/tulip/Kconfig +++ b/drivers/net/tulip/Kconfig @@ -27,6 +27,18 @@ config DE2104X To compile this driver as a module, choose M here. The module will be called de2104x. +config DE2104X_DSL + int "Descriptor Skip Length in 32 bit longwords" + depends on DE2104X + range 0 31 + default 0 + help + Setting this value allows to align ring buffer descriptors into their + own cache lines. Value of 4 corresponds to the typical 32 byte line + (the descriptor is 16 bytes). This is necessary on systems that lack + cache coherence, an example is PowerMac 5500. Otherwise 0 is safe. + Default is 0, and range is 0 to 31. + config TULIP tristate "DECchip Tulip (dc2114x) PCI support" depends on PCI |