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doc: kernel-parameters.txt: Add ide-generic.probe-mask 

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
[ jc: wording tweaked slightly ]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Maciej W. Rozycki 2014-10-25 17:03:52 +01:00 committed by Jonathan Corbet
parent 1679689231
commit 0f8b7f5d76
1 changed files with 12 additions and 0 deletions
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Documentation/kernel-parameters.txt
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@ -1303,6 +1303,18 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
.cdrom .chs .ignore_cable are additional options
See Documentation/ide/ide.txt.
ide-generic.probe-mask= [HW] (E)IDE subsystem
Format: <int>
Probe mask for legacy ISA IDE ports. Depending on
platform up to 6 ports are supported, enabled by
setting corresponding bits in the mask to 1. The
default value is 0x0, which has a special meaning.
On systems that have PCI, it triggers scanning the
PCI bus for the first and the second port, which
are then probed. On systems without PCI the value
of 0x0 enables probing the two first ports as if it
was 0x3.
ide-pci-generic.all-generic-ide [HW] (E)IDE subsystem
Claim all unknown PCI IDE storage controllers.