diff options
| author | Damien Miller <djm@cvs.openbsd.org> | 2008-04-19 01:18:40 +0000 |
|---|---|---|
| committer | Damien Miller <djm@cvs.openbsd.org> | 2008-04-19 01:18:40 +0000 |
| commit | fee43a053805f4933951b7d78241781f8ae7a500 (patch) | |
| tree | 9c7e85cdf0c074faf367a778ccd6b99668b10d3f /share | |
| parent | 6cb93110cadadebeb39944e273766149084876d8 (diff) | |
add a driver flag to force the negotiation of SATA 1 transfers
(1.5Gb/s). Useful where faster speeds are unstable; ok dlg@
Diffstat (limited to 'share')
| -rw-r--r-- | share/man/man4/ahci.4 | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/share/man/man4/ahci.4 b/share/man/man4/ahci.4 index 75c9e48a254..46813e30a52 100644 --- a/share/man/man4/ahci.4 +++ b/share/man/man4/ahci.4 @@ -1,4 +1,4 @@ -.\" $OpenBSD: ahci.4,v 1.6 2007/07/02 03:37:40 dlg Exp $ +.\" $OpenBSD: ahci.4,v 1.7 2008/04/19 01:18:39 djm Exp $ .\" .\" Copyright (c) 2006 David Gwynne <dlg@openbsd.org> .\" @@ -14,7 +14,7 @@ .\" TORTIOUS ACTION, ARISING OUT OF .\" PERFORMANCE OF THIS SOFTWARE. .\" -.Dd $Mdocdate: July 2 2007 $ +.Dd $Mdocdate: April 19 2008 $ .Dt AHCI 4 .Os .Sh NAME @@ -38,6 +38,11 @@ Although .Nm controllers are actual ATA controllers, the driver emulates SCSI via a translation layer. +.Pp +Setting the lowest bit (0x1) of the driver flags forces +.Nm +to negotiate SATA 1 (1.5 Gb/s) transfer speeds only. +It may be useful where higher speeds are unstable. .Sh SEE ALSO .Xr intro 4 , .Xr jmb 4 , |