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authorFD Cami <francois.cami@free.fr>2008-01-06 19:08:56 +0100
committerJeff Garzik <jeff@garzik.org>2008-01-10 16:53:55 -0500
commitfcb71f6f034c6c4f6a3ab4a55404c95db6e32653 (patch)
treeea35c74746db99c2d412cf9adf931133a2f2aee1 /Documentation
parent4ccd3329a2e51473a86547a55f9e5f98f8f65b33 (diff)
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Update kernel parameter document for libata DMA mode setting knobs.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/kernel-parameters.txt8
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index e5b447a..c417877 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -883,6 +883,14 @@ and is between 256 and 4096 characters. It is defined in the file
lapic_timer_c2_ok [X86-32,x86-64,APIC] trust the local apic timer in
C2 power state.
+ libata.dma= [LIBATA] DMA control
+ libata.dma=0 Disable all PATA and SATA DMA
+ libata.dma=1 PATA and SATA Disk DMA only
+ libata.dma=2 ATAPI (CDROM) DMA only
+ libata.dma=4 Compact Flash DMA only
+ Combinations also work, so libata.dma=3 enables DMA
+ for disks and CDROMs, but not CFs.
+
libata.noacpi [LIBATA] Disables use of ACPI in libata suspend/resume
when set.
Format: <int>
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