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Document the addition of the hw.ata.ata_dma_check_80pin tunable.

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Submitted by:	Patrick Lamaizière <patfbsd -at- davenulle.org>
MFC after:	1 week
This commit is contained in:
Philip Paeps 2008-08-18 09:17:16 +00:00
parent 80b11ee46a
commit 19a71edb3a
1 changed files with 6 additions and 2 deletions
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8
share/man/man4/ata.4
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@ -27,7 +27,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd October 5, 2007
.Dd August 18, 2008
.Dt ATA 4
.Os
.Sh NAME
@ -85,6 +85,8 @@ The following tunables are settable from the loader:
.Bl -ohang
.It Va hw.ata.ata_dma
set to 1 for DMA access, 0 for PIO (default is DMA).
.It Va hw.ata.ata_dma_check_80pin
set to 0 to disable the 80pin cable check (default is 1, check the cable)
.It Va hw.ata.atapi_dma
set to 1 for DMA access, 0 for PIO (default is DMA).
.It Va hw.ata.wc
@ -169,7 +171,9 @@ the
driver has detected that the required 80 conductor cable is not present
or could not be detected properly,
or that one of the devices on the channel only accepts up
to UDMA2/ATA33.
to UDMA2/ATA33. The
.Va hw.ata.ata_dma_check_80pin
tunable can be set to 0 to disable this check.
.Pp
Unknown ATAPI devices are initialized to DMA mode if the
.Va hw.ata.atapi_dma